• Model : GB-RFTOUSB

  GB-RFTO series wireless data transmission equipment is reinforced module integrates comply protocol standard RF transceiver and the microprocessor, which has a communication distance , strong anti-jamming capability , flexible networking, and other advantages and features ; can achieve transparent transmission of data between devices multipoint and multipoint between ; may form mESH type of star and mesh network structure.

  GB-RFTO series wireless data transmission equipment Serial RS232, transparent transmission of USB, WIFI, NET data , in addition to achieve a general point data communications capabilities , but also for network communication between multiple points .

  GB-RFTO series wireless data transmission equipment into the center coordinator , routers and end nodes , these three devices with different network functions , the center coordinator is the central node of the network, the sponsoring organization is responsible for the network, network maintenance and management functions ; relay router is responsible for forwarding data terminal nodes only transmit and receive the data node . Center coordinator , routers and end nodes of these three types of devices in the hardware configuration is exactly the same , just different device parameters .

  1 ,Module Features

  The main function description :ByConversion between the USB interface and wireless through wireless conduct group network communication ;

  Wireless powerful:With relay routing function ;

  Communication distance :The maximum line of sight transmission distance up to 2000 meters ;

  Anti-interference ability :2.4G DSSS spread spectrum technology ;

  Serial flexible application :Transparent transmission mode or instruction format , the maximum baud rate 115200 ;

  Flexible transmit mode :Send broadcast or destination address mode selectable ;

  Flexible node types :The central node , the routing nodes, terminal nodes can be arbitrarily set ;

  Networking ability :Star network , tree network , chain mesh, mesh network ;

  Greater network capacity :16-channel selectable, 65535 Network ID can be set

  2,Interface Description

  
  

  No.	Grade	Description
  1	USB1	USB interface and PCUSBConnected
  2	J1	Programming and debugging interface
  3	A1	Module antenna interface to send and receive data remotely if needed to connect an external antenna

   

  3 ,Electrical / Performance Parameters

   

  Project	Description
  Supported operating systems	Support windows98SE/2000/XP/vista/server 2003/win7
  	Support Mac OS-X/OS-9
  	Support for linux
  USB client interface protocol	Compliance with USB version2.0 specification
  USB physical interface	USB A -type male
  Power Supply	USB powered, no external power supply
  Operating Temperature	-40 ~ +85
  Humidity	0 ~ 95 % non-condensing
  Operating Frequency	2.4G ISM band global free
  Modulation	DSSS Direct Sequence Spread Spectrum
  Transmit Power	19dbm
  Serial communication speed	Can be set from 1200 to 115200
  Transmission mode	Send broadcast or destination address
  Network Topology	Star, tree , chain , mesh
  Peak current	160mA
  Antenna connection	Glue stick antenna , suction cup antenna , feeder + glue stick antenna , fiberglass antenna

   

  4,Module Application

  Remote automatic meter reading AMR system

  Food safety traceability system

  Wireless street light control system

  Modern agricultural greenhouses Systems

  smart home, smart home

  RFID data transmission

  Instruments data acquisition and transmission

  Wireless sensor data transmission

  Underground personnel positioning system

   

   

   

  5 ,Module Resources

  ( 1 )Master module :GB2530

  (2) RF to USB serial chip : CP2102

  ( 3 ) Antenna:2.4G reverse polarity antenna

  ( 4 ) programming port: 2.0Mm pitch is used for female

  6 ,Programming port (J1) Description

  

  P2_2----- DEBUG function pin DC

  P2_1----- DEBUG function pin DD

  GND ------ power supply , the power supply is negative

  The positive input of the power supply VDD -----

  REST_N ---- reset pin , active low

   

  Interface for Debug, programming, program download , Packet Sniffer, SmartRFStudio7

  7 ,GB-RFTOUSB schematics

  

  The following are the results of field testing company staff on GB2530H module

  Test time:2011-12-04In the afternoon2Point to5Point Sunday

  Weather conditions : sunny,7-15Celsius , the breeze

   

  First, open area test ( lake unobstructed )

  2011-12-04In the afternoon2Point to4Point00Points, for2530High power modules in Nanchang Hi-tech Zone Aixihu test specific location following screenshot ( as Baidu maps and Ranging ) :

  

  The test3Endpoints , namely the distance1.9Km2.7Km and3.9Km :

  1 ,In the distance1.9Km , the signal intensity -60DB, Contracting200Test10Times , the success rate of the closing package100%, No packet loss and packet error ;

  2 ,In the distance2.7Km , the signal intensity -65DB, Contracting200Test10Times , the success rate of the closing package100%, No packet loss and packet error ;

  3, The distance3.9Km , the signal intensity -70DB, Contracting200Test10Times , packet loss rate0.2%Or less , in line with1%The loss licensing